Comment by amazingamazing

My original post says this:

> Preventing cavities is far more effective with topical application of fluoride on the teeth, rather than ingestion.

Since you don't seem to disagree, there's nothing to discuss then. Cheers! Also, it is a fact that fluoride is most effective towards preventing cavities topically. You can Google Scholar this and see for yourself. There's a reason dentists prescribe high-fluoride toothpaste or gel, instead of just saying drink more fluoridated water.